CN108033622A - The system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater - Google Patents
The system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater Download PDFInfo
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- CN108033622A CN108033622A CN201711331560.5A CN201711331560A CN108033622A CN 108033622 A CN108033622 A CN 108033622A CN 201711331560 A CN201711331560 A CN 201711331560A CN 108033622 A CN108033622 A CN 108033622A
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- desulfurization wastewater
- pipe
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- fine particle
- power plant
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- 239000002351 wastewater Substances 0.000 title claims abstract description 127
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 121
- 230000023556 desulfurization Effects 0.000 title claims abstract description 121
- 239000010419 fine particle Substances 0.000 title claims abstract description 50
- 238000012545 processing Methods 0.000 title claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 115
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 230000007246 mechanism Effects 0.000 claims abstract description 60
- 239000007921 spray Substances 0.000 claims abstract description 45
- 239000004615 ingredient Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 239000012528 membrane Substances 0.000 claims description 48
- 238000004062 sedimentation Methods 0.000 claims description 33
- 239000013505 freshwater Substances 0.000 claims description 30
- 238000000108 ultra-filtration Methods 0.000 claims description 28
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 238000002203 pretreatment Methods 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 238000005189 flocculation Methods 0.000 claims description 8
- 230000016615 flocculation Effects 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 229910001385 heavy metal Inorganic materials 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 5
- 239000004902 Softening Agent Substances 0.000 claims description 4
- 238000011001 backwashing Methods 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 4
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 4
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 24
- 239000003546 flue gas Substances 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 16
- 238000002360 preparation method Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 3
- 150000003839 salts Chemical class 0.000 description 18
- 239000013618 particulate matter Substances 0.000 description 11
- 238000007599 discharging Methods 0.000 description 9
- 239000010802 sludge Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- 239000005864 Sulphur Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 238000011045 prefiltration Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000012267 brine Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 238000009736 wetting Methods 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 239000011344 liquid material Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 238000009434 installation Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000009938 salting Methods 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 101150054854 POU1F1 gene Proteins 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 230000018199 S phase Effects 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
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- 239000003814 drug Substances 0.000 description 1
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- 238000005530 etching Methods 0.000 description 1
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- 230000004907 flux Effects 0.000 description 1
- 239000002563 ionic surfactant Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 125000005341 metaphosphate group Chemical group 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229940074404 sodium succinate Drugs 0.000 description 1
- ZDQYSKICYIVCPN-UHFFFAOYSA-L sodium succinate (anhydrous) Chemical compound [Na+].[Na+].[O-]C(=O)CCC([O-])=O ZDQYSKICYIVCPN-UHFFFAOYSA-L 0.000 description 1
- WVFDILODTFJAPA-UHFFFAOYSA-M sodium;1,4-dihexoxy-1,4-dioxobutane-2-sulfonate Chemical compound [Na+].CCCCCCOC(=O)CC(S([O-])(=O)=O)C(=O)OCCCCCC WVFDILODTFJAPA-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/10—Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
- C02F1/12—Spray evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
Abstract
The present invention relates to a kind of system for cooperateing with processing coal-burning power plant's fine particle and desulfurization wastewater, including desulfurization wastewater processing unit, reunion liquid to prepare unit and reunion processing unit；Desulfurization wastewater processing unit includes being used for the filter mechanism for filtering desulfurization wastewater, and filter mechanism has water outlet pipe and concentrated water outlet；Reunion liquid, which prepares unit, includes mixed ingredients case, and there is mixed ingredients case reunion material inlet, desulfurization wastewater entrance and the outlet of reunion liquid, desulfurization wastewater entrance to be connected with water outlet pipe；Reunion processing unit includes the spray gun being inserted into flue, and spray gun is connected with reunion liquid for pipe, and reunion liquid is for pipe and reunion liquid outlet.Desulfurization wastewater is become useful reunion liquid preparation raw material by said system, is recycled the agglomerator effect of reunion liquid the fine particle in flue gas is flocculated and is grown up, so as to synchronously realize the minimum discharge of coal-burning power plant's fine particle and the zero-emission of desulfurization wastewater.
Description
Technical field
The invention belongs to environmental technology field, is related to coal-burning power plant's pollutant minimum discharge control technology field, specifically relates to
A kind of and system for cooperateing with processing coal-burning power plant's fine particle and desulfurization wastewater.
Background technology
Coal is the main body energy in China, has reached 10.5 hundred million kilowatts by 2016 end of the year whole nation thermoelectricitys installation total amount, has accounted for
The 63.6% of electric power installation total amount, and in the following quite a long time, electric power of the China based on coal fired power generation supplies
General layout is answered not change.But the flue gas of coal-burning power plant's discharge is the important emission source of each pollutant in China's air,
The SO of super half2, NOx and inhalable particulate matter derive from coal-burning power plant, all kinds of waste water that power plant produces in addition, as desulfurization is given up
The process problem up to standard of water etc. is still more prominent.With the ring of the continuous improvement of people's environmental consciousness, in recent years coal-burning power plant
Border problem receives much concern, and under the overall background of China's energy-saving and emission-reduction, a series of laws and regulations are put into effect to limit and specification in succession
The blowdown behavior of coal-burning power plant, also increasingly stringent for the pollution emission standard of coal-burning power plant, its purpose is exactly to reduce to greatest extent
Coal-burning power plant's pollutant especially inhalable particulate matter, SO2, NOx, the discharge capacity of waste water etc., finally realize the ultralow row of flue gas
Put and wastewater zero discharge.
Inhalable particulate matter (i.e. fine particle) and desulfurization wastewater are more intractable in the pollutant of coal-burning power plant's discharge
Two classes, wherein fine particle is because the features such as particle diameter is smaller, difficult charged, difficult wetting is difficult by traditional electrostatic precipitation, cloth bag
The means such as dedusting remove completely, and the concentration of its flue gas emission mouth is still up to 30mg/m3, far above 10mg/m3Minimum discharge mark
It is accurate；It is several and desulfurization wastewater its salinity, suspended particulate substance, hardness content etc. after three traditional header process is still higher
No reuse value, has forbidden directly discharging.
Newest issuing and implementation in 2017《Thermal power plant's prevention and cure of pollution possible technique guide》In explicitly pointed out coal-burning power plant
Fine particle minimum discharge and the necessity of desulfurization wastewater zero-emission.For built coal-burning power plant, its flue gas fine particle
Minimum discharge transform mainly by carrying out upgrading realization to original cleaner, fund input is larger, the duration is longer and related
Boiler must stop production, and have a great influence to the normal operation of power plant.The fine particle occurred in recent years, which is reunited, strengthens dedusting technology then
There is no this respect problem, and the flue gas particles concentration after processing is better than national standard, has reached 5mg/m3Below.And desulfurization
The zero-emission of waste water is mainly the means by evaporation, and the desulfurization wastewater that major pollutants are removed after pre-treatment is steamed
Hair crystallization, water become discharge of steam or reuse, and salinity becomes solid crystal recycling or sells, the technique difference desulfurization wastewater of evaporation
The effect of zero-emission is also different, wherein being current public affairs using the flue evaporation technique of power-plant flue gas waste heat progress desulfurization wastewater evaporation
The most energy saving desulfurization wastewater zero-emission measure recognized, but because related supporting technology is still incomplete, the flue evaporation skill of desulfurization wastewater
Art still remains that problems are urgently to be resolved hurrily, as problem, potential etching problem etc. are blocked up in the dirt in evaporation process.In addition, for
Built coal-burning power plant, the minimum discharge of its fine particle and the zero-emission transformation of desulfurization wastewater, which exist, repeats asking for construction
How topic, synchronously realize the minimum discharge and zero-emission of fine particle and desulfurization wastewater by a kind of means within compared with casual labourer's phase
It is the Main way of current research and Future Development.
The content of the invention
The present embodiments relate to a kind of system for cooperateing with processing coal-burning power plant's fine particle and desulfurization wastewater, can at least solve
The certainly segmental defect of the prior art.
The present embodiments relate to a kind of system for cooperateing with processing coal-burning power plant's fine particle and desulfurization wastewater, including desulfurization
Treatment unit for waste water, reunion liquid prepare unit and reunion processing unit；The desulfurization wastewater processing unit includes being used for de-
The filter mechanism that sulphur waste water is filtered, the filter mechanism have water outlet pipe and concentrated water outlet；The reunion liquid is matched somebody with somebody
Unit processed includes mixed ingredients case, and there is the mixed ingredients case reunion material inlet, desulfurization wastewater entrance and reunion liquid to go out
Mouthful, the desulfurization wastewater entrance is connected with the water outlet pipe；The reunion processing unit includes the spray being inserted into flue
Rifle, the spray gun are connected with reunion liquid for pipe, and the reunion liquid is for pipe and the reunion liquid outlet.
As one of embodiment, the filter mechanism includes ultrafiltration membrane, and the first control is equipped with the water outlet pipe
Valve.
As one of embodiment, backwash periodically or non-periodically is carried out to the ultrafiltration membrane, back-washing method includes：Described in closing
First control valve on water outlet pipe, pressurize backwash is carried out to the ultrafiltration membrane.
As one of embodiment, the desulfurization wastewater processing unit further includes pre-treatment mechanism, pre-treatment mechanism bag
Clear water reserviors and at least first stage precipitation tank being sequentially connected in series are included, along desulfurization wastewater circulating direction, sedimentation basin, the clear water described in final stage
Pond is sequentially connected in series with the filter mechanism by desulfurization wastewater runner pipe.
As one of embodiment, with the clear water reserviors or wherein, sedimentation basin described in level-one is connected the concentrated water outlet.
As one of embodiment, the sedimentation basin has three-level, wherein, first order sedimentation basin is used to precipitate in desulfurization wastewater
Bulky grain thing；To second level sedimentation basin adds milk of lime, sulfur-bearing recaptures agent and bodied ferric sulfate flocculation aid, to promote desulfurization wastewater
In suspended particulate substance, heavy metal and at least part of sulfate radical precipitation；Sodium carbonate softening agent is added into third level sedimentation basin,
To promote the hardness species precipitate in desulfurization wastewater.
As one of embodiment, the water outlet pipe is connected with fresh water collecting pond, and the fresh water collecting pond passes through fresh water
Runner pipe is connected with the desulfurization wastewater entrance, along fresh water circulating direction in being equipped with the first membrane on the fresh water runner pipe successively
Pump and first filter.
As one of embodiment, along reunion liquid circulating direction in the reunion liquid for be equipped with successively on pipe the second diaphragm pump and
Second filter.
As one of embodiment, the spray gun is also configured with anti-blocking wiper mechanism.
As one of embodiment, the clear water that the anti-blocking wiper mechanism includes being connected with the spray gun is for pipe, in described clear
Water is for pipe and the reunion liquid for being equipped with the second control valve on pipe；When needing to clean the spray gun, the group is closed
Poly- liquid is opened the clear water for second control valve on pipe, is filled into the spray gun for second control valve on pipe
Water is cleaned；After the completion of cleaning, the clear water is closed for second control valve on pipe, opens the reunion liquid on pipe
Second control valve.
The embodiment of the present invention at least has the advantages that：
The fresh water obtained after the filtered mechanism filtration treatment of desulfurization wastewater is sent into mixed ingredients case, is mixed with reunion material
Configure reunion liquid, then by spray gun by reunion liquid spray into flue in, agglomerator drop be quickly distributed with flue gas in flue and with
Fine particle in flue gas comes into full contact with, and fine particle is agglomerated into bulky grain thing through wetting and flocculation, while utilize de-
Inorganic salts in the reunion agent solution that sulphur waste water is prepared can dramatically increase the carrying capacity of particulate matter, the highly charged particulate matter of large scale
It is easy to be trapped fixed and removed by deduster so that the concentration of emission of flue gas fine particle is less than 10mg/m3, realize thin
The minimum discharge of grain thing, and the moisture in agglomerator drop also evaporates rapidly under the high temperature action of flue gas, utilizes desulfurization wastewater
Inorganic salts, heavy metal ion in the reunion agent solution of preparation etc. become crystal salt, and crystal salt enters deduster with bulky grain thing
And remove and then realize the zero-emission of desulfurization wastewater.Collaboration processing coal-burning power plant's fine particle provided by the invention and desulfurization are given up
Desulfurization wastewater, is become useful reunion liquid preparation raw material by the system of water, is recycled the agglomerator effect of reunion liquid and is made in flue gas
Fine particle flocculation grow up, so as to synchronously realize the minimum discharge of coal-burning power plant's fine particle and the zero-emission of desulfurization wastewater,
Power plant is avoided to transform in batches, repeat negative effect caused by constructing.The simple efficient and the degree of automation of the system technological process
Height, has the characteristics that cost of investment is low, the transformation cycle is short, small to power plant's Influence of production, suitable for the coal-burning power plant of various scales
Minimum discharge is transformed.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the knot of the system of collaboration processing coal-burning power plant's fine particle that the embodiment of the present invention one provides and desulfurization wastewater
Structure schematic diagram；
Fig. 2 is the knot for the system that collaboration provided by Embodiment 2 of the present invention handles coal-burning power plant's fine particle and desulfurization wastewater
Structure schematic diagram.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Embodiment one
Such as Fig. 1, the embodiment of the present invention provides a kind of system for cooperateing with processing coal-burning power plant's fine particle and desulfurization wastewater, bag
Include desulfurization wastewater processing unit, reunion liquid prepares unit and reunion processing unit；The desulfurization wastewater processing unit includes using
In the filter mechanism filtered to desulfurization wastewater, the filter mechanism has water outlet pipe and concentrated water outlet；The group
Poly- liquid, which prepares unit, includes mixed ingredients case 23, the mixed ingredients case 23 with reunion material inlet, desulfurization wastewater entrance with
And the outlet of reunion liquid, the desulfurization wastewater entrance are connected with the water outlet pipe；The reunion processing unit includes being inserted into
Spray gun 29 in flue 31, the spray gun 29 are connected with reunion liquid and connect for pipe, the reunion liquid for pipe and reunion liquid outlet
It is logical.
The fresh water obtained after the filtered mechanism filtration treatment of desulfurization wastewater is sent into mixed ingredients case 23, is mixed with reunion material
Configuration reunion liquid is closed, then is sprayed into reunion liquid in flue 31 by spray gun 29, agglomerator drop is quick with flue gas in flue 31
It is distributed and is come into full contact with the fine particle in flue gas, fine particle is agglomerated into bulky grain thing through wetting and flocculation, together
Inorganic salts in the reunion agent solution that Shi Liyong desulfurization wastewaters are prepared can dramatically increase the carrying capacity of particulate matter, and large scale is highly charged
Particulate matter be easy to trap fixed by deduster and remove so that the concentration of emission of flue gas fine particle is less than 10mg/m3, it is real
Show the minimum discharge of fine particle, and the moisture in agglomerator drop of the diameter less than 60 microns is also in the high temperature action of flue gas
Lower rapid evaporation, becomes crystal salt using the inorganic salts in the reunion agent solution of desulfurization wastewater preparation, heavy metal ion etc., crystallizes
Salt enters deduster with bulky grain thing and removes and then realize the zero-emission of desulfurization wastewater.
The system of collaboration processing coal-burning power plant's fine particle and desulfurization wastewater provided in this embodiment, treated de-
Sulphur waste water becomes useful reunion liquid preparation raw material, recycles the agglomerator effect of reunion liquid and the fine particle in flue gas is flocculated
Grow up, so as to synchronously realize the minimum discharge of coal-burning power plant's fine particle and the zero-emission of desulfurization wastewater, wherein flue gas fine grained
The concentration of emission of thing is less than 10mg/m3, be up to state standards value, avoids power plant and transforms, repeated caused by constructing negatively in batches
Influence.The simple efficient and the degree of automation of said system technological process is high, with cost of investment is low, the transformation cycle is short, to power plant
The features such as Influence of production is small, suitable for coal-burning power plant's minimum discharge transformation of various scales.
The collaboration processing coal-burning power plant's fine particle and the system of desulfurization wastewater for continuing above-mentioned, such as Fig. 1, the filter mechanism
Including ultrafiltration membrane 6, the first control valve 8 is equipped with the water outlet pipe.Desulfurization wastewater is carried out at filtering using ultrafiltration membrane 6
Reason, can make it that the impurity such as most particulate matter is effectively removed in desulfurization wastewater, reduce follow-up reunion spray gun 29 and block
Probability, meanwhile, most salinity is retained in desulfurization wastewater, ensures follow-up reunion dust removing effects.Above-mentioned ultrafiltration
It is that membrane filter system is lost in cross-flow that film 6, which is preferably, and the anti-pollution that can improve ultrafiltration membrane 6 blocks up ability；In the present embodiment, membrane aperture is 35
In~50 micrometer ranges, the membrane aperture of 40 microns is more preferably selected.
In the present embodiment, the structure of the first control valve 8 is equipped with based on above-mentioned water outlet pipe, it is possible to achieve to the ultrafiltration
The backwash of film 6, specifically, periodically or non-periodically carries out backwash, back-washing method includes to the ultrafiltration membrane 6：Close described light
First control valve 8 on water outlet pipe, pressurize backwash is carried out to the ultrafiltration membrane 6.Usually, the influent side of ultrafiltration membrane 6
Water supply pump 7 is provided with the desulfurization wastewater pipeline of connection；After closing first control valve 8 on water outlet pipe, dilute side
Stop production water, dilute side pipeline pressure rises, and the reversible dirt that 6 fenestra surface of ultrafiltration membrane is formed is got lodged under the action of fresh water lateral pressure
Loosen, and 6 surface of disengaging ultrafiltration membrane (further can be on concentrated water outlet under the agitaion that above-mentioned water supply pump 7 produces
First control valve is set, and at this time, the first control valve on concentrated water outlet is in the state opened), finally ultrafiltration is left with concentrated water
Film 6.
Preferably, above-mentioned backwash operation is regularly carried out to the ultrafiltration membrane 6, a preferred embodiment is：
Ultrafiltration membrane 6 is often run 5~6 minutes, and the first control valve 8 on water outlet pipe is closed 20~30 seconds, carries out pressurize
Backwash, so as to ensure the high throughput of ultrafiltration membrane 6, the subsequent operation of ultrafiltration membrane 6 and backwash operation are alternately.Above-mentioned water supply pump
7 be preferably to use big flow circulating pump 7.
Based on above-mentioned 6 backwashing function of ultrafiltration membrane, the anti-pollution that can effectively improve ultrafiltration membrane 6 blocks up ability, so as to improve this
The service life of ultrafiltration membrane 6, extends its cleaning frequency.
Further optimize the system of above-mentioned collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, such as Fig. 1 is described de-
Sulphur treatment unit for waste water further includes pre-treatment mechanism, and the pre-treatment mechanism includes clear water reserviors 5 and at least level-one being sequentially connected in series
Sedimentation basin, along desulfurization wastewater circulating direction, sedimentation basin 4, the clear water reserviors 5 and the filter mechanism are given up by desulfurization described in final stage
Current siphunculus is sequentially connected in series.Desulfurization wastewater is pre-processed by pre-treatment mechanism, the work that can reduce filter mechanism is born
Lotus, improves the work efficiency and service life of filter mechanism.Clear water reserviors 5 are set between final stage sedimentation basin 4 and filter mechanism, can be with
Coordinate the work rhythm between pre-treatment mechanism and filter mechanism, ensure the treatment effect of pre-treatment mechanism.
Preferably, as Fig. 1, the sedimentation basin have three-level, wherein, first order sedimentation basin 2 is used to precipitate in desulfurization wastewater
Bulky grain thing；To second level sedimentation basin 3 adds milk of lime, sulfur-bearing recaptures agent and bodied ferric sulfate flocculation aid (is preferably sequentially to add
Enter), to promote suspended particulate substance, heavy metal and at least part of sulfate radical in desulfurization wastewater to precipitate；To third level sedimentation basin 4
Middle addition sodium carbonate softening agent, to promote the hardness species precipitate in desulfurization wastewater, which includes calcium, magnesium etc..
Further, as Fig. 1, above-mentioned pre-treatment mechanism are also configured with sludge concentration tank 32, sedimentation basin bottoms at different levels are all provided with
There is mud discharging mouth, each mud discharging mouth is connected by sludge pipe with sludge concentration tank 32 respectively, equal at each mud discharging mouth
Equipped with mud discharging valve.For ease of the collection and discharge of sludge, the bottom of above-mentioned each sedimentation basin is preferably V-shaped or presents under width
Narrow taper, above-mentioned mud discharging mouth are arranged at the bottom of corresponding sedimentation basin.In addition, above-mentioned pre-treatment mechanism may also include it is de-
Sulphur wastewater collection pond 1, desulfurization wastewater raw water enter regulating water quality and water in the desulfurization wastewater collecting pit 1.
Desulfurization wastewater raw water enters 1 regulating water quality of desulfurization wastewater collecting pit and water, and water outlet enters first order sedimentation basin 2,
Bulky grain thing in desulfurization wastewater sinks to 2 bottom of first order sedimentation basin, and the muddy water containing particulate matter is periodically arranged through mud discharging valve
Put to sludge concentration tank 32, supernatant and enter second level sedimentation basin 3；By be added sequentially into second level sedimentation basin 3 milk of lime,
Sulfur-bearing recaptures the medicaments such as agent, bodied ferric sulfate flocculation aid, promotes suspended particulate substance, heavy metal and part of sulfuric acid in desulfurization wastewater
Root becomes sludge, is deposited on the bottom of second level sedimentation basin 3, and muddy water is periodically emitted into sludge concentration tank 32 through mud discharging valve,
Supernatant enters third level sedimentation basin 4；By adding sodium carbonate softening agent into third level sedimentation basin 4, calcium, magnesium in waste water etc.
Hardness material becomes sludge, is deposited on the bottom of third level sedimentation basin 4, and muddy water is periodically emitted into sludge condensation through mud discharging valve
Pond 32, supernatant enter clear water reserviors 5.Agitating paddle can be set in above-mentioned desulfurization wastewater collecting pit and sedimentation basin at different levels,
To improve the sedimentation effect of desulfurization wastewater.On pipeline between clear water reserviors 5 and filter mechanism above-mentioned big flow can be set to follow
Ring pump 7.
As one of preferred embodiment, the concentrated water outlet is precipitated with the clear water reserviors 5 or wherein described in level-one
Pond connects, i.e., the concentrated water obtained through ultrafiltration membrane 6 is back to clear water reserviors 5 or is wherein continued with first stage precipitation tank, de- to realize
The zero-emission of sulphur waste water.Preferably, as Fig. 1, the concentrated water outlet are connected with clear water reserviors 5.
Further optimize the system of above-mentioned collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, such as Fig. 1 is described light
Water outlet pipe is connected with fresh water collecting pond 9, and the fresh water collecting pond 9 is connected by fresh water runner pipe and the desulfurization wastewater entrance
It is logical, along fresh water circulating direction in being equipped with the first diaphragm pump 16 and first filter 17 on the fresh water runner pipe successively.Using every
Membrane pump can realize the quantitative conveying of desulfurization wastewater, while the corrosion for preventing desulfurization wastewater from being pumped to common material.Fresh water collecting pond 9
In waste water under the power of the first diaphragm pump 16 through first filter 17 quantitatively enter mixed ingredients case 23 in；Above-mentioned first
Filter 17 further filters fresh water, ensures the cleannes of reunion liquid, further reduces follow-up reunion spray gun 29 and block
Probability.
Further optimize the system of above-mentioned collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, such as Fig. 1, along reunion
Liquid circulating direction is in the reunion liquid for being equipped with the second diaphragm pump 26 and the second filter 27 successively on pipe.In mixed ingredients case 23
The reunion liquid of preparation is supplied under the power of the second diaphragm pump 26 to spray gun 29, and the second filter 27 can filter out undissolved complete
Feed particles, ensure the cleannes of reunion liquid, reduce the probability that reunion spray gun 29 blocks.
Above-mentioned 17 and second filter 27 of first filter is both preferably and uses cartridge filter, and there is preferably desulfurization to give up
Water/reunion liquid filter effect.
In above-mentioned mixed ingredients case 23, desulfurization wastewater fresh water and reunion material mixed preparing reunion liquid, the part group
Polymers material expects to be connected with agglomerator with agglomerator liquid material, i.e. the reunion material inlet of the mixed ingredients case 23 and consolidate admittedly including agglomerator
Hopper 24 and agglomerator liquid tank 25.The mixed ingredients case 23 is also configured with blender, desulfurization wastewater fresh water, agglomerator expect admittedly and
Agglomerator liquid material is quantitatively added in mixed ingredients case 23 and is uniformly mixed under the stirring action of blender and is configured to reunite
Agent.Above-mentioned agglomerator expects mainly to be compounded according to a certain percentage by ionic surfactant and wetting agent admittedly to be formed, wherein, ion
Type surfactant includes：Dodecyl sodium sulfate, cetyltrimethylammonium bromide, neopelex etc. are at least
It is a kind of；Wetting agent includes：At least one of dihexyl sodium sulfosuccinate, sodium succinate etc..Above-mentioned agglomerator liquid material mainly by
Glue connects agent and additive compounds form according to a certain percentage, wherein, glue connects agent and includes：At least the one of polyacrylamide, pectin etc.
Kind；Additive includes at least one of phosphate, metaphosphate, polyphosphate etc..
Further optimize the system of above-mentioned collaboration processing coal-burning power plant's fine particle and desulfurization wastewater, such as Fig. 1, the spray
Rifle 29 is also configured with anti-blocking wiper mechanism, by the anti-blocking wiper mechanism with the dirty stifled phenomenon of spray gun caused by eliminating reunion liquid, protects
The stable and high effective operation of reunion processing unit is demonstrate,proved, simplifies the Manual maintenance operations of spray gun 29, extends the service life of equipment.Specifically
Ground, such as Fig. 1, the anti-blocking wiper mechanism include the clear water that be connected with the spray gun 29 for pipe, in the clear water for pipe with it is described
Reunion liquid on pipe for being equipped with the second control valve (having illustrated, do not mark)；When needing to clean the spray gun 29, institute is closed
Reunion liquid is stated for second control valve on pipe, the clear water is opened for second control valve on pipe, to the spray gun
Water-filling is cleaned in 29；After the completion of cleaning, the clear water is closed for second control valve on pipe, opens the reunion liquid
For second control valve on pipe.
In the present embodiment, it is preferable that by the way of periodically being cleaned automatically to spray gun 29, a specific embodiment
It is：Spray gun 29 often run 1 it is small when, close the reunion liquid for second control valve on pipe, open the clear water on pipe
Second control valve, into spray gun 29, water-filling carries out cleaning 5~6 seconds to spray gun 29；After the completion of cleaning, the clear water is closed
For second control valve on pipe, the reunion liquid is opened for second control valve on pipe, and spray gun 29 continues spray group
Poly- liquid carries out reunion dedusting work.
It is easy-to-understand to, above-mentioned clear water can connect cleaning water tank 30 for pipe, and to supply clear water, Guan Shangshe is supplied in the clear water
Clear water transfer pump is put, which can be centrifugal pump etc., to provide power needed for cleaning water supply.Above-mentioned reunion liquid supplies
It is to be arranged on along reunion liquid circulating direction after the second filter 27 that the second control valve on pipe, which is preferably,.
It it is further preferred that above-mentioned spray gun 29 is double-current atomizing lance 29, can spray reunion liquid mistization, improve and reunite
Dust removing effects.Such as Fig. 1, which is connected with compressed air for pipe and compressed air source 28, can supply pressure 0.3~
The compressed air of 0.5MPa.Above-mentioned reunion processing unit may include more spray guns 29, can be set on every spray gun 29 at least one
Nozzle, the diameter of nozzle is preferably in the range of 2~7mm；In the present embodiment, two double fluid atomizations are provided with every spray gun 29
Nozzle, each spray gun 29 can be circular layout along the circumferential direction of 31 tube body of flue, and multiple sprays can also be set gradually along flue gas circulating direction
Drenching layer, each spraying layer can set a spray gun 29 or set more spray guns 29 along the circumferential annular of tube body.Above-mentioned reunion processing
Each spray gun 29 of unit is preferably placed in the flue 31 between coal-burning power plant's air preheater and deduster.
The double fluid atomizing lance 29 is preferably that the agglomerator size droplet diameter after atomization can be made to be less than 60 microns, the reunion of atomization
Agent drop is quickly distributed with flue gas in flue 31 and is come into full contact with the fine particle in flue gas, through wetting and flocculation handle
Fine particle is agglomerated into bulky grain thing, while the inorganic salts in the reunion agent solution prepared using desulfurization wastewater can dramatically increase
The carrying capacity of grain thing, the highly charged particulate matter of large scale are easy to be trapped fixed and removed by deduster so that flue gas fine grained
The concentration of emission of thing is less than 10mg/m3, the minimum discharge of fine particle is realized, and diameter is less than 60 microns of agglomerator drop
In moisture also evaporated rapidly under the high temperature action of flue gas, using desulfurization wastewater prepare reunion agent solution in inorganic salts,
Heavy metal ion etc. becomes crystal salt, and crystal salt enters deduster with bulky grain thing and removes and then realize the zero of desulfurization wastewater
Discharge, since atomized drop can be evaporated completely in 0.5 second without that into deduster, can avoid causing to damage to cleaner
Wound.
Embodiment two
The embodiment of the present invention provide it is a kind of cooperate with processing coal-burning power plant's fine particle and desulfurization wastewater system, its with it is above-mentioned
The structure for the system that embodiment one is provided is essentially identical, difference lies in filter mechanism therein is different, specifically：
Such as Fig. 2, which includes prefilter 6, RO UF membranes mechanism and NF UF membranes mechanism, the prefilter
6 have the first water outlet pipe and the first concentrated water outlet；The arrival end of the RO UF membranes mechanism goes out with first fresh water
Mouth pipe connection, the RO UF membranes mechanism have the second water outlet pipe and the second concentrated water outlet；The NF UF membranes mechanism
Arrival end connected with the second concentrated water outlet, the NF UF membranes mechanism has the 3rd water outlet pipe and the 3rd concentrated water
Outlet, the 3rd water outlet pipe are connected with monovalence brine collecting mechanism, the 3rd concentrated water outlet i.e. with it is above-mentioned
The desulfurization wastewater entrance connection of mixed ingredients case 23.Wherein, in RO UF membranes mechanism, most salt in desulfurization wastewater
Material is divided to be trapped within influent side and produce concentrated water, the less fresh water of salinity then enters the second water outlet pipe；In NF UF membranes
In mechanism, the monovalent salt in the isolated concentrated water of RO films 12 generates monovalence brine through NF films 18, and high price salt is then by NF films 18
Retention generation high price salt concentrated water, so as to fulfill the salt treatment of dividing of desulfurization wastewater, that is, realizes the recycling of desulfurization wastewater.
It is further preferred that in above-mentioned NF UF membranes mechanism, for that may have the divalence of a small amount of part in other words
The situation of ion permeable NF films 18, it is as follows can further to optimize the system：Such as Fig. 2, the monovalence brine collecting mechanism includes mixed
Bed unit 21, which, which has, is easy to quick-replaceable anion-cation exchange resin, can effectively remove the moon of divalence
Cation；Divalent ion in the desulfurization wastewater of the 3rd water outlet pipe circulation can be by the negative and positive in the mixed bed unit 21
Resin removes, so as to obtain pure monovalence salting liquid, which can collect into brine tank 22.Above-mentioned mixed bed unit 21
Reproducible mixed bed is generally used, it can be bought by market, and concrete structure is omitted herein.Above-mentioned mixed bed unit 21 with
Fresh-water tank 20 can be set to carry out the caching of NF UF membrane fresh water between NF UF membranes mechanism.The monovalence salting liquid of above-mentioned acquisition is to contain
The sodium chloride solution and/or Klorvess Liquid of the less high concentration of impurity.
It is further preferred that such as Fig. 2, the RO UF membranes mechanism includes 12 and first sonic generator 13 of RO films；Namely
It is that the RO films 12 carry the first sonic generator 13, it can be achieved that being cleaned to the automatic of the RO films 12.Specifically, which forms
For circular cylinder, influent side is its inner cavity, and the RO putaminas of annular are arranged with outside the RO films 12, and above-mentioned first sonic generator 13 is excellent
It is structure and to be sheathed in a ring outside the RO films 12 to elect as, and between RO films 12 and RO putaminas.Due to higher dense of concentration
Salinity material part crystallization in water separate out can be attached to RO films 12 surface formed it is reversible dirty stifled, it is therefore desirable to the RO films 12
Carry out cleaning periodically or non-periodically.When needing to clean the RO films 12, sent out by first sonic generator 13
Go out ultrasonic wave and trigger cavitation in the corresponding desulfurization wastewater to produce bubble, using the bubble in the RO films 12
The pressure effect that skin breakage produces promotes insoluble dirt to decompose；Cavitation can produce substantial amounts of micro-bubble, and a large amount of bubbles exist
18 surface high frequency of NF films hits rupture and moment can produce the pressure of thousands of a atmospheric pressure, under high pressure effect 12 surface of RO films and
Insoluble dirt in concentrated water can be decomposed and be discharged with concentrated water.Preferably, the frequency of first sonic generator 13 is 20000
Hertz, the bubble diameter that cavitation produces is in 60 microns.
It is further preferred that such as Fig. 2, the NF UF membranes mechanism includes 18 and second sonic generator 19 of NF films；Namely
It is that the NF films 18 carry the second sonic generator 19, it can be achieved that being cleaned to the automatic of the NF films 18.Specifically, which forms
For circular cylinder, influent side is its inner cavity, and the NF putaminas of annular are arranged with outside the NF films 18, and above-mentioned second sonic generator 19 is excellent
It is structure and to be sheathed in a ring outside the NF films 18 to elect as, and between NF films 18 and NF putaminas.Due to higher dense of concentration
High price salt in water because excessive concentration and partially crystallizable separates out, can be attached to NF films 18 surface formed it is reversible dirty stifled, therefore
Need to carry out the NF films 18 cleaning periodically or non-periodically.When needing to clean the NF films 18, pass through described second
Sonic generator 19 sends ultrasonic wave and triggers cavitation to utilize the gas to produce bubble in the corresponding desulfurization wastewater
Steeping the pressure effect produced in 18 skin breakage of NF films promotes insoluble dirt to decompose；Cavitation can produce substantial amounts of small gas
Bubble, a large amount of bubbles hit rupture in 18 surface high frequency of NF films and moment can produce the pressure of thousands of a atmospheric pressure, are acted in high pressure
Insoluble dirt in lower 18 surface of NF films and concentrated water can be decomposed and be discharged with concentrated water.Preferably, second sonic generator
19 frequency is 20000 hertz, and the bubble diameter that cavitation produces is in 60 microns.
Based on the above-mentioned RO UF membranes mechanism with acoustic vibration and NF UF membranes mechanism, it is possible to achieve to RO films 12 and NF
Film 18 is cleaned in real time, and the flux decline of RO films 12 and NF films 18 is smaller, is cleaned and is overhauled without frequent shutdown, can effectively reduce
The operation maintenance frequency of RO films 12 and NF films 18, so as to extend the service life of RO films 12 and NF films 18, reduces production maintenance
Cost.
It is further preferred that such as Fig. 2, the prefilter 6 includes ultrafiltration membrane 6, is equipped with the first water outlet pipe
First control valve 8.Ultrafiltration membrane 6 provided in this embodiment is identical with the structure for the ultrafiltration membrane 6 that above-described embodiment one is provided, equally
Pressurize backwash operation can be carried out, details are not described herein again for specific ground structure and method.
It is further preferred that such as Fig. 2, give up on the first water outlet pipe and the second concentrated water outlet along desulfurization
Water circulating direction is equipped with booster pump 10 and accurate filter 11 successively.Above-mentioned accurate filter 11 can filter out the small particle in waste water
Suspended matter, reduces the live load of follow-up RO films 12 and NF films 18, ensures treatment effect, it is preferably to be filtered using polyester fiber
Core.In addition, can also set fresh water collecting pond 9 between above-mentioned prefilter 6 and RO UF membranes mechanism, the fresh water collecting pond 9 is excellent
Elect as between the booster pump 10 being arranged on 6 and first water outlet pipe of prefilter；In above-mentioned RO UF membranes mechanism and NF films
Concentrated water collecting pit 15 can be also set between separating mechanism, which is preferably to be arranged in RO UF membranes mechanism and second
Between booster pump 10 on concentrated water outlet；The second above-mentioned water outlet pipe can also connect fresh water cache pool 14.
It is further preferred that such as Fig. 2, the second above-mentioned water outlet pipe is also connected with above-mentioned desulfurization wastewater entrance, from
And it can realize the zero-emission of desulfurization wastewater.The isolated fresh water of RO films 12 contains a small amount of salinity, can still play above-mentioned
Increase flue gas in particulate matter carrying capacity effect, furthermore, it is possible to reduce reunion liquid prepare in water distribution quantity.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.
Claims (10)
- A kind of 1. system for cooperateing with processing coal-burning power plant's fine particle and desulfurization wastewater, it is characterised in that：At desulfurization wastewater Manage unit, reunion liquid prepares unit and reunion processing unit；The desulfurization wastewater processing unit includes being used for the filter mechanism for filtering desulfurization wastewater, and the filter mechanism has Water outlet pipe and concentrated water outlet；The reunion liquid, which prepares unit, includes mixed ingredients case, and the mixed ingredients case has reunion material inlet, desulfurization wastewater Entrance and the outlet of reunion liquid, the desulfurization wastewater entrance are connected with the water outlet pipe；The reunion processing unit includes the spray gun being inserted into flue, and the spray gun is connected with reunion liquid for pipe, the reunion Liquid is for pipe and the reunion liquid outlet.
- 2. the system of collaboration processing coal-burning power plant's fine particle as claimed in claim 1 and desulfurization wastewater, it is characterised in that：Institute Stating filter mechanism includes ultrafiltration membrane, and the first control valve is equipped with the water outlet pipe.
- 3. the system of collaboration processing coal-burning power plant's fine particle as claimed in claim 2 and desulfurization wastewater, it is characterised in that fixed Phase irregularly carries out backwash to the ultrafiltration membrane, and back-washing method includes：First control valve on the water outlet pipe is closed, pressurize backwash is carried out to the ultrafiltration membrane.
- 4. the system of collaboration processing coal-burning power plant's fine particle as claimed in claim 1 and desulfurization wastewater, it is characterised in that：Institute State desulfurization wastewater processing unit and further include pre-treatment mechanism, the pre-treatment mechanism includes clear water reserviors and be sequentially connected in series at least one Level sedimentation basin, along desulfurization wastewater circulating direction, sedimentation basin, the clear water reserviors and the filter mechanism are given up by desulfurization described in final stage Current siphunculus is sequentially connected in series.
- 5. the system of collaboration processing coal-burning power plant's fine particle as claimed in claim 4 and desulfurization wastewater, it is characterised in that：Institute Stating concentrated water outlet, with the clear water reserviors or wherein sedimentation basin described in level-one is connected.
- 6. the system of collaboration processing coal-burning power plant's fine particle as claimed in claim 4 and desulfurization wastewater, it is characterised in that：Institute Stating sedimentation basin has three-level, wherein,First order sedimentation basin is used to precipitate the bulky grain thing in desulfurization wastewater；To second level sedimentation basin adds milk of lime, sulfur-bearing recaptures agent and bodied ferric sulfate flocculation aid, to promote in desulfurization wastewater Suspended particulate substance, heavy metal and at least part of sulfate radical precipitation；Sodium carbonate softening agent is added into third level sedimentation basin, to promote the hardness species precipitate in desulfurization wastewater.
- 7. the system of collaboration processing coal-burning power plant's fine particle as claimed in claim 1 and desulfurization wastewater, it is characterised in that：Institute State water outlet pipe and be connected with fresh water collecting pond, the fresh water collecting pond is connected by fresh water runner pipe and the desulfurization wastewater entrance It is logical, along fresh water circulating direction in being equipped with the first diaphragm pump and first filter on the fresh water runner pipe successively.
- 8. the system of collaboration processing coal-burning power plant's fine particle as claimed in claim 1 and desulfurization wastewater, it is characterised in that：Edge Reunion liquid circulating direction is in the reunion liquid for being equipped with the second diaphragm pump and the second filter successively on pipe.
- 9. the system of collaboration processing coal-burning power plant's fine particle as claimed in claim 1 and desulfurization wastewater, it is characterised in that：Institute State spray gun and be also configured with anti-blocking wiper mechanism.
- 10. the system of collaboration processing coal-burning power plant's fine particle as claimed in claim 9 and desulfurization wastewater, it is characterised in that： The clear water that the anti-blocking wiper mechanism includes being connected with the spray gun is for pipe, in the clear water for pipe and the reunion liquid on pipe It is equipped with the second control valve；When needing to clean the spray gun, the reunion liquid is closed for second control valve on pipe, is opened described clear Water is for second control valve on pipe, and into the spray gun, water-filling is cleaned；After the completion of cleaning, the clear water is closed for pipe On second control valve, open the reunion liquid for second control valve on pipe.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109181646A (en) * | 2018-11-06 | 2019-01-11 | 中国大唐集团科学技术研究院有限公司华中分公司 | A kind of coal-burning power plant's dust suppressant for promoting fine grained to reunite |
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